GNU/Linux vs. Microsoft

GNU/Linux & GPL
Freedom 0: The freedom to run the program for any purpose.
Freedom 1: The freedom to study how the program works, and change it to make it do what you wish.
Freedom 2: The freedom to redistribute copies so you can help your neighbor.
Freedom 3: The freedom to improve the program, and release your improvements (and modified versions in general) to the public, so that the whole community benefits.

versus

Microsoft & EULA
You give up all rights
You accept all obligations placed on you for limited benefit
You may not share the software
You may not change the software
You do not own the software
You may only install the software to one device
We reserve the right to change the license for any reason or purpose at any time
You may only run the software as specifically spelled out in the EULA